you can get a hand held TDS meter for next to nothing,, you would be amazed at the TDS level of some"RO" water you buy.. for a tank that small just go to HEB and Get some 1 gal Jugs off the shelf
you can get a hand held TDS meter for next to nothing,, you would be amazed at the TDS level of some"RO" water you buy.. for a tank that small just go to HEB and Get some 1 gal Jugs off the shelf
My Reef is Alive and well Despite My repeated Daily attemps to kill it!!